AT+CMGR=1
+CMGR: 1,,78
0791246020099990400C91247042972767000070107031107440A005000301020182E8B71A040FDBD96516881E5E83DA65907D5C968741EEF49AFC06B9CBEFB53C4C66B34061771AE42EEBDDE1799AED4EB34161D0BA0E7F93D3F63A483D2FB74161771AE42ED7E7EE3A3BCC0285C720FABB5D07B5DF6390BB3C1FA3C3FA32FBAD4BB940D43219342F83C6E8FC9C1E6E83E0F2F0F86D0FD3416150FBAD77874169903B0CA2BF41
OK